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《Journal of Changchun University of Technology(Natural Science Edition)》 2014-01
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PET optimization conditions for polyol waste degradation

LV Hui;ZHENG Hai-jian;Textile Engineering Department of Anhui Vocational and Technical College;Textile Engineering Department of Jiangnan University;  
With infrared absorption spectroscopy and mass spectrometer analysis,the effects of polyol depolymerization polyester PET on the structure of the medium molecular weight PET degradation products are studied under different conditions.Terminal Group Analysis Method is used to test both the epoxide value and average molecular weight of PET products.According the analysis,the optimal conditions to get the PET product performance and medium molecular weight PET degradation are as follows:temperature is 280℃;Zn(AC)2·2H2O 1%of PET weight;polyol weight 3.5times of the weight of abandon PET;alcoholysis time 3h.The EV of alcoholysis products can reach 0.336and the average molecular weight reduces to 296.
【CateGory Index】: TQ317
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